Dear Lists!
I have written a VM SoundPlugin for OpenBSD's native sound system sndio. Which means that now I have sound in Squeak on this platform. However I am a bit struggling with the sound quality of SampledSound's like in the eToys SoundLibrary. Those produce an echo effect when played and I have been unable to determine the cause. However the Bach fugue Tests sound perfect so I am suspecting some miscalculations in sample data somewhere on the way.
As I have been trying to confirm the 'normal' behaviour on Linux I stumbled over issues with the sound plugins on my ArchLinux box: None of them work.
ALSA, OSS or Pulse Audio plugins error out in different stages of the drivers.
Am I the only one? What's the last known good state of those? What's the last known good state of sound output for the SoundLibrary SampledSounds?
I have tried with latest master and trunk of both opensmalltalk-vm and Squeak.
I am grateful for any hints. Once that works I will propose patches to the opensmalltalk-vm code base.
Thanks,
Christian
Hi Christian,
just a wild guess (I can not check it right now) but you might have a SoundPlayer with activated reverb?
You can stop it from doing that with:
SoundPlayer stopReverb
Bests Patrick
05.12.2019 08:40:55 Christian Kellermann ckeen@pestilenz.org:
Dear Lists!
I have written a VM SoundPlugin for OpenBSD's native sound system sndio. Which means that now I have sound in Squeak on this platform. However I am a bit struggling with the sound quality of SampledSound's like in the eToys SoundLibrary. Those produce an echo effect when played and I have been unable to determine the cause. However the Bach fugue Tests sound perfect so I am suspecting some miscalculations in sample data somewhere on the way.
As I have been trying to confirm the 'normal' behaviour on Linux I stumbled over issues with the sound plugins on my ArchLinux box: None of them work.
ALSA, OSS or Pulse Audio plugins error out in different stages of the drivers.
Am I the only one? What's the last known good state of those? What's the last known good state of sound output for the SoundLibrary SampledSounds?
I have tried with latest master and trunk of both opensmalltalk-vm and Squeak.
I am grateful for any hints. Once that works I will propose patches to the opensmalltalk-vm code base.
Thanks,
Christian
-- May you be peaceful, may you live in safety, may you be free from suffering, and may you live with ease.
* Patrick Rein patrick.rein@hpi.uni-potsdam.de [191205 09:21]:
Hi Christian,
just a wild guess (I can not check it right now) but you might have a SoundPlayer with activated reverb?
You can stop it from doing that with:
SoundPlayer stopReverb
Oh indeed! Wow, that was quite a surprise. Why would the default SoundPlayer have a reverb effect switched on by default?
Thanks, it seems to work now. Next step is to provide a non-(vm)-blocking interface. Does anyone know how the semaphore mechanism is supposed to be used on the plugin side? How is concurrent sound output handled in the Squeak image?
Thanks!
Christian
I have written a VM SoundPlugin for OpenBSD's native sound system sndio. Which means that now I have sound in Squeak on this platform. However I am a bit struggling with the sound quality of SampledSound's like in the eToys SoundLibrary. Those produce an echo effect when played and I have been unable to determine the cause. However the Bach fugue Tests sound perfect so I am suspecting some miscalculations in sample data somewhere on the way.
You may try your VM on the muO image available at: http://www.zogotounga.net/comp/squeak/sqgeo.htm (the direct link is http://www.zogotounga.net/comp/squeak/muo/muO347.zip)
I have tweaked the sound settings there, including the default reverb, and made a couple fixes too pretty much all over the place.
Try for example SampledSound playSoundNamed:'laugh' SampledSound playSoundNamed:'motor' SampledSound playSoundNamed:'coyote'
Or: FMSound flute2 play: Mode A minor upwardRun FMSound mellowBrass play: Mode E mixolydian stepwiseWalk FMSound pluckedElecBass play: Mode C2 minor timeSong NFunction sound3 playWithDeclickingFrom: 0 to: 5 BeeThree new playASong FluteSansDCOffset new playASong Vibraphone new playASong Drone new playASong
These sounds should all be clean (no click, no echo)
Stef
Hi Stéphane!
* Stéphane Rollandin lecteur@zogotounga.net [191205 11:41]:
I have written a VM SoundPlugin for OpenBSD's native sound system sndio. Which means that now I have sound in Squeak on this platform. However I am a bit struggling with the sound quality of SampledSound's like in the eToys SoundLibrary. Those produce an echo effect when played and I have been unable to determine the cause. However the Bach fugue Tests sound perfect so I am suspecting some miscalculations in sample data somewhere on the way.
You may try your VM on the muO image available at: http://www.zogotounga.net/comp/squeak/sqgeo.htm (the direct link is http://www.zogotounga.net/comp/squeak/muo/muO347.zip)
I will try it, thanks! It seems the default reverb has been the cause of my troubles! I will use your image as a test bench too. Is there a reason why your modifications haven't made it into the mainline image?
All the best!
Christian
Is there a reason why your modifications haven't made it into the mainline image?
There are many little (or important) modifications in the muO image, which is basically my own version of Squeak, and it is not easy to break them into coherent patches to be submitted for inclusion into trunk.
Also, attempting to contribute to Squeak has been for me a rather frustrating experience overall, which leaves me unmotivated to push by code forward.
For example I just recently made several fixes in the AbstractSound hierarchy so that volume scaling works properly everywhere. This was triggered by this thread here on squeak-dev: http://forum.world.st/Adjusting-the-volume-of-a-sound-as-it-s-playing-td5102....
In that thread I proposed some code, but I did not formally ask for inclusion in trunk because I felt someone else should review it first, but in fact the topic just died at this point, with not even the OP responding.
So at the moment those fixes are in muO only.
Stef
Hi Christian, please consider contributing your code to open Smalltalk vm (if you haven’t already). We can happily add a platforms/openbsd if required.
_,,,^..^,,,_ (phone)
On Dec 4, 2019, at 11:40 PM, Christian Kellermann ckeen@pestilenz.org wrote:
Dear Lists!
I have written a VM SoundPlugin for OpenBSD's native sound system sndio. Which means that now I have sound in Squeak on this platform. However I am a bit struggling with the sound quality of SampledSound's like in the eToys SoundLibrary. Those produce an echo effect when played and I have been unable to determine the cause. However the Bach fugue Tests sound perfect so I am suspecting some miscalculations in sample data somewhere on the way.
As I have been trying to confirm the 'normal' behaviour on Linux I stumbled over issues with the sound plugins on my ArchLinux box: None of them work.
ALSA, OSS or Pulse Audio plugins error out in different stages of the drivers.
Am I the only one? What's the last known good state of those? What's the last known good state of sound output for the SoundLibrary SampledSounds?
I have tried with latest master and trunk of both opensmalltalk-vm and Squeak.
I am grateful for any hints. Once that works I will propose patches to the opensmalltalk-vm code base.
Thanks,
Christian
-- May you be peaceful, may you live in safety, may you be free from suffering, and may you live with ease.
Hi Eliot, Christian,
On 05.12.2019, at 19:33, Eliot Miranda eliot.miranda@gmail.com wrote:
Hi Christian, please consider contributing your code to open Smalltalk vm (if you haven’t already). We can happily add a platforms/openbsd if required.
I at one point considered that, but up until now, it has worked quite ok with the Unix-flavoured builds in linuxXX.xxx.
Indeed, it should be as simple as adding a folder vm-sound-sndio to platforms/unix and adding a file for autoconf, and maybe cmake, as well as your plugin source. Examples can be found in vm-sound-Sun, vm-sound-NAS and so on.
Then, someone should regenerate the configure file in platforms/unix/config and the linux builds will happily pick up the new plugins.
Best regards -Tobias
_,,,^..^,,,_ (phone)
On Dec 4, 2019, at 11:40 PM, Christian Kellermann ckeen@pestilenz.org wrote:
Dear Lists!
I have written a VM SoundPlugin for OpenBSD's native sound system sndio. Which means that now I have sound in Squeak on this platform. However I am a bit struggling with the sound quality of SampledSound's like in the eToys SoundLibrary. Those produce an echo effect when played and I have been unable to determine the cause. However the Bach fugue Tests sound perfect so I am suspecting some miscalculations in sample data somewhere on the way.
As I have been trying to confirm the 'normal' behaviour on Linux I stumbled over issues with the sound plugins on my ArchLinux box: None of them work.
ALSA, OSS or Pulse Audio plugins error out in different stages of the drivers.
Am I the only one? What's the last known good state of those? What's the last known good state of sound output for the SoundLibrary SampledSounds?
I have tried with latest master and trunk of both opensmalltalk-vm and Squeak.
I am grateful for any hints. Once that works I will propose patches to the opensmalltalk-vm code base.
Thanks,
Christian
-- May you be peaceful, may you live in safety, may you be free from suffering, and may you live with ease.
* Tobias Pape Das.Linux@gmx.de [191206 11:11]:
Hi Eliot, Christian,
On 05.12.2019, at 19:33, Eliot Miranda eliot.miranda@gmail.com wrote:
Hi Christian, please consider contributing your code to open Smalltalk vm (if you haven’t already). We can happily add a platforms/openbsd if required.
I at one point considered that, but up until now, it has worked quite ok with the Unix-flavoured builds in linuxXX.xxx.
Indeed, it should be as simple as adding a folder vm-sound-sndio to platforms/unix and adding a file for autoconf, and maybe cmake, as well as your plugin source. Examples can be found in vm-sound-Sun, vm-sound-NAS and so on.
Then, someone should regenerate the configure file in platforms/unix/config and the linux builds will happily pick up the new plugins.
That's what I did. I'll prepare a pull request as it is basically working, I will add concurrent and non blocking access later.
Hi Christian,
On Thu, Dec 05, 2019 at 08:40:41AM +0100, Christian Kellermann wrote:
Dear Lists!
I have written a VM SoundPlugin for OpenBSD's native sound system sndio. Which means that now I have sound in Squeak on this platform. However I am a bit struggling with the sound quality of SampledSound's like in the eToys SoundLibrary. Those produce an echo effect when played and I have been unable to determine the cause. However the Bach fugue Tests sound perfect so I am suspecting some miscalculations in sample data somewhere on the way.
It is good to hear that you are working on this :-)
As I have been trying to confirm the 'normal' behaviour on Linux I stumbled over issues with the sound plugins on my ArchLinux box: None of them work.
ALSA, OSS or Pulse Audio plugins error out in different stages of the drivers.
On my Ubuntu Linux laptop, the Pulse audio VM module works, and the others do not. I have to explicitly ask for vm-sound-pulse, otherwise no sound. So for me, the command line is (on my system, the 64-bit Spur VM is run from /usr/local/bin/spur64):
$ spur64 -vm-sound-pulse squeak.image
Am I the only one? What's the last known good state of those? What's the last known good state of sound output for the SoundLibrary SampledSounds?
I have tried with latest master and trunk of both opensmalltalk-vm and Squeak.
It may be that you are missing some runtime libraries on you Linux system. I am not sure what the actual requirements are, but for reference here is what is currently installed on my Ubuntu system:
lewis@lewis-Gazelle-Pro:~$ dpkg --list | grep pulse ii gstreamer1.0-pulseaudio:amd64 1.8.3-1ubuntu0.4 amd64 GStreamer plugin for PulseAudio ii libcanberra-pulse:amd64 0.30-2.1ubuntu1 amd64 PulseAudio backend for libcanberra ii libpulse-dev:amd64 1:8.0-0ubuntu3.10 amd64 PulseAudio client development headers and libraries ii libpulse-mainloop-glib0:amd64 1:8.0-0ubuntu3.10 amd64 PulseAudio client libraries (glib support) ii libpulse0:amd64 1:8.0-0ubuntu3.10 amd64 PulseAudio client libraries ii libpulse0:i386 1:8.0-0ubuntu3.10 i386 PulseAudio client libraries ii libpulsedsp:amd64 1:8.0-0ubuntu3.10 amd64 PulseAudio OSS pre-load library ii libpulsedsp:i386 1:8.0-0ubuntu3.10 i386 PulseAudio OSS pre-load library ii pulseaudio 1:8.0-0ubuntu3.10 amd64 PulseAudio sound server ii pulseaudio-module-bluetooth 1:8.0-0ubuntu3.10 amd64 Bluetooth module for PulseAudio sound server ii pulseaudio-module-x11 1:8.0-0ubuntu3.10 amd64 X11 module for PulseAudio sound server ii pulseaudio-utils 1:8.0-0ubuntu3.10 amd64 Command line tools for the PulseAudio sound server
I am grateful for any hints. Once that works I will propose patches to the opensmalltalk-vm code base.
You will want to join the vm-dev mailing list for discussion of VM and plugin contributions:
http://lists.squeakfoundation.org/mailman/listinfo/vm-dev
Dave
Thanks,
Christian
-- May you be peaceful, may you live in safety, may you be free from suffering, and may you live with ease.
squeak-dev@lists.squeakfoundation.org
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Christian Kellermann -
David T. Lewis -
Eliot Miranda -
Patrick Rein -
Stéphane Rollandin -
Tobias Pape